ATV/UTV Engine
ATV/UTV Engine Parts at JJ Motorsports
Maximize your ATV or UTV's engine life with top-quality components from JJ Motorsports. Our selection includes gasket kits, connecting rods, water pump rebuild kits, and timing plugs designed for reliable sealing, strength, and easy installation in demanding off-road conditions. Compatible with Polaris, Can-Am, Honda, and more, these parts ensure peak power, reduced wear, and efficient operation for trail riding or utility work.
Shop trusted brands like Moose Racing for rebuild kits and Winderosa for gaskets. Explore related categories such as ATV/UTV air and fuel for intake upgrades or ATV/UTV drivetrain for transmission enhancements.
Top ATV/UTV Engine Products
- MOOSE UTILITY Clutch Cover Gasket Seal 500-1265-PU – Durable seal for clutch cover protection.
- WINDEROSA Standard Bore Gasket Kit 810585 – Complete kit for engine sealing and rebuilds.
- WORKS CONNECTION Engine Timing Plug 24-590 – Precision plug for accurate timing adjustments.
- MOOSE RACING Connecting Rod MR5026 – High-strength rod for engine durability.
- MOOSE RACING Water Pump Rebuild Kit 821865 – Comprehensive kit for water pump maintenance.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
HOT RODS Connecting Rod 8729
HOT RODS
$185.95When you're pushing your engine to high RPM, a weak connecting rod becomes your biggest liability. The HOT RODS 8729 is engineered to handle extreme loads with 8620 AISI steel construction and precision-machined geometry that reduces bearing distortion...09230581- SKU:
- 09230581
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- RIDING STYLE:
- ATV
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD
- UNITS:
- EACH
$185.95 -
HOT RODS Connecting Rod 8671
HOT RODS
$225.95When you're pushing your engine to its limits, your connecting rods are doing the same—transferring massive loads thousands of times per minute. The HOT RODS 8671 Connecting Rod is engineered for durability and reliability in high-rpm applications,...09230228- SKU:
- 09230228
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- RIDING STYLE:
- ATV
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- UNITS:
- KIT
- ENGINE TYPE:
- 4-CYCLE
$225.95Qty in Cart: 0Quantity:Price:$225.95Subtotal: -
HOT RODS Crankshaft 4430
HOT RODS
$1,311.95The HOT RODS Crankshaft 4430 delivers the reliability and performance margin you need when building or rebuilding a high-output engine. Factory-assembled and trued to OEM specifications, this crankshaft meets or exceeds stock performance while offering...09210607- SKU:
- 09210607
- Availability:
- Ships Same Business Day
- Weight:
- 21.60 LBS
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- MATERIAL:
- 4140 STEEL
- TYPE:
- OEM STROKE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 71.50 MM
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 850 CC
- UNITS:
- ASSEMBLY
$1,311.95 -
HOT RODS Crankshaft 4429
HOT RODS
$900.95The HOT RODS Crankshaft 4429 is a factory-assembled, ready-to-install crankshaft engineered to meet or exceed OEM performance standards. Whether you're rebuilding a high-mileage engine or upgrading for increased reliability, this complete assembly...09210606- SKU:
- 09210606
- Availability:
- Ships Same Business Day
- Weight:
- 14.65 LBS
- DISPLACEMENT:
- 450 CC TO 570 CC
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- UTV
- STROKE LENGTH METRIC:
- 73.60 MM
- TYPE:
- OEM STROKE
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- ATV
$900.95 -
HOT RODS Crankshaft 4433
HOT RODS
$322.95The HOT RODS Crankshaft 4433 delivers the reliability and performance consistency your engine demands, whether you're running a stock rebuild or a high-output platform. Factory-assembled and trued to OEM specifications, this crankshaft meets or exceeds...09210603- SKU:
- 09210603
- Availability:
- Ships Same Business Day
- Weight:
- 19.80 LBS
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 71.50 MM
- TYPE:
- OEM STROKE
- MODEL:
- 4-CYCLE
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 1000 CC
- FEATURES:
- STANDARD CRANKSHAFT
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- ATV
$322.95 -
HOT RODS Crankshaft Kit CBK0226
HOT RODS
$1,244.95If you're building a high-displacement or stroker engine, your stock crankshaft simply won't cut it. The HOT RODS Crankshaft Kit CBK0226 delivers factory-assembled precision with increased stroke geometry, allowing you to gain meaningful displacement and...09210600- SKU:
- 09210600
- Availability:
- Ships Same Business Day
- Weight:
- 20.30 LBS
- PRODUCT NAME:
- CRANKSHAFT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
$1,244.95 -
HOT RODS Crankshaft Kit CBK0224
HOT RODS
$1,191.95If you're building a high-displacement engine or need to recover stroke lost to boring, the HOT RODS Crankshaft Kit CBK0224 delivers factory-matched precision without compromise. This complete assembly arrives trued to OEM specifications and ready to...09210599- SKU:
- 09210599
- Availability:
- Ships Same Business Day
- Weight:
- 25.00 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT
$1,191.95 -
HOT RODS Crankshaft Kit CBK0215
HOT RODS
$1,164.95If you're serious about maximizing displacement and torque output without a complete engine rebuild, a stroker crankshaft is one of the most cost-effective power adders available. The HOT RODS CBK0215 arrives factory-assembled and trued to OEM...09210596- SKU:
- 09210596
- Availability:
- Ships Same Business Day
- Weight:
- 19.40 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT
$1,164.95 -
HOT RODS Crankshaft Kit CBK0216
HOT RODS
$1,297.95If you're serious about maximizing displacement and low-end torque without a complete engine rebuild, a stroker crankshaft is one of the most cost-effective upgrades available. The HOT RODS CBK0216 arrives factory-assembled, trued to OEM specifications,...09210594- SKU:
- 09210594
- Availability:
- Ships Same Business Day
- Weight:
- 19.45 LBS
- PRODUCT NAME:
- CRANKSHAFT
- RIDING STYLE:
- UTV
- UNITS:
- KIT
$1,297.95 -
HOT RODS Crankshaft Kit 4412
HOT RODS
$927.95If you're building a long-stroke engine for your ATV, you need a crankshaft assembly engineered to handle the increased demands of extended stroke geometry. The HOT RODS Crankshaft Kit 4412 arrives factory-assembled, trued to OEM specifications, and...09210513- SKU:
- 09210513
- Availability:
- Ships Same Business Day
- Weight:
- 15.30 LBS
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 66.00 MM
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 750 CC
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- UTV
- TYPE:
- OEM STROKE
- MODEL:
- 4-CYCLE
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$927.95 -
HOT RODS Crankshaft Kit CBK0109
HOT RODS
$662.95If you're building or rebuilding an engine that demands reliability under extreme conditions, the HOT RODS Crankshaft Kit CBK0109 delivers OEM-spec performance without compromise. This factory-assembled complete unit pairs a precision-engineered...09210350- SKU:
- 09210350
- Availability:
- Ships Same Business Day
- Weight:
- 12.59 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- ATV
- TYPE:
- OEM
$662.95Qty in Cart: 0Quantity:Price:$662.95Subtotal: -
HOT RODS Crankshaft - Stroker 4160
HOT RODS
$645.95If you're serious about maximizing displacement and low-end torque on your ATV, a stroker crankshaft is one of the most effective bolt-on upgrades available. The HOT RODS Crankshaft – Stroker 4160 arrives factory-assembled and trued to OEM...09210048- SKU:
- 09210048
- Availability:
- Ships Same Business Day
- Weight:
- 10.37 LBS
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 67.80 MM
- DISPLACEMENT:
- 471 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- MODEL:
- 4-CYCLE
- STROKE LENGTH:
- 67,80 MM
- TYPE:
- STROKER
$645.95 -
HOT RODS Crankshaft 4073
HOT RODS
$476.95If you're building a long-stroke engine for your ATV, the HOT RODS Crankshaft 4073 eliminates the guesswork and machine work typically required for displacement upgrades. This complete assembly arrives factory-assembled and trued to OEM specifications,...09210044- SKU:
- 09210044
- Availability:
- Ships Same Business Day
- Weight:
- 9.38 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- COLOR/FINISH:
- STEEL
- TYPE:
- OEM STROKE
- MODEL:
- 4-CYCLE
- RIDING STYLE:
- ATV
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 450 CC
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 63.40 MM
$476.95 -
HOT RODS Crankshaft - Stroker 4173
HOT RODS
$645.95If you're serious about extracting maximum displacement and low-end torque from your ATV, a stroker crankshaft is one of the most effective bolt-on upgrades available. The HOT RODS Crankshaft 4173 arrives fully assembled, trued to OEM specifications, and...09210043- SKU:
- 09210043
- Availability:
- Ships Same Business Day
- Weight:
- 9.02 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- DISPLACEMENT:
- 470 CC TO 471 CC
- MODEL:
- 4-CYCLE
- RIDING STYLE:
- ATV
- STROKE LENGTH:
- 66,40 MM
- STROKE LENGTH METRIC:
- 66.40 MM
- COLOR/FINISH:
- STEEL
- TYPE:
- STROKER
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
$645.95 -
HOT RODS Crankshaft 4070
HOT RODS
$476.95If you're building a long-stroke engine for your ATV, you need a crankshaft engineered to handle increased displacement and sustained performance demands. The HOT RODS Crankshaft 4070 arrives completely assembled, trued to OEM specifications, and ready...09210042- SKU:
- 09210042
- Availability:
- Ships Same Business Day
- Weight:
- 10.37 LBS
- DISPLACEMENT:
- 450 CC
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 62.00 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$476.95 -
HOT RODS Crankshaft - Stroker 4170
HOT RODS
$645.95Increasing displacement is one of the most direct paths to more power, and the HOT RODS Crankshaft - Stroker 4170 delivers measurable gains without the machine work typically required for long-stroke builds. This purpose-built stroker crankshaft is...09210041- SKU:
- 09210041
- Availability:
- Ships Same Business Day
- Weight:
- 10.21 LBS
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- STROKE LENGTH METRIC:
- 65.00 MM
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH:
- 65,00 MM
- TYPE:
- STROKER
- DISPLACEMENT:
- 470 CC
- MATERIAL:
- 4140 STEEL
- MODEL:
- 4-CYCLE
- UNITS:
- ASSEMBLY
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- ATV
$645.95Qty in Cart: 0Quantity:Price:$645.95Subtotal: -
VERTEX Piston Ring 590382000002
VERTEX
$52.95Piston rings are critical wear items that directly impact engine compression, blow-by control, and overall performance longevity. The VERTEX 590382000002 delivers superior durability through advanced surface coatings that reduce friction and resist...09120389- SKU:
- 09120389
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- PISTON DIAMETER METRIC:
- 71.95 MM
- UNITS:
- SET
$52.95Qty in Cart: 0Quantity:Price:$52.95Subtotal: -
VERTEX Piston Ring 590380000001
VERTEX
$52.95Piston rings are critical wear items that directly impact compression, blow-by control, and oil consumption—factors that separate a well-tuned engine from one that's struggling. The VERTEX Piston Ring 590380000001 delivers extended service life through...09120388- SKU:
- 09120388
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 80.00 MM
- PISTON DIAMETER METRIC:
- 79.95 MM
- RIDING STYLE:
- UTV
- UNITS:
- SET
$52.95 -
JE PISTONS Piston Kit 284765
JE PISTONS
$329.99When you're pushing your engine to its limits in competition or high-performance applications, your pistons need to handle extreme pressures and temperatures without compromise. JE PISTONS' Pro Series 284765 kit combines precision engineering with...09105896- SKU:
- 09105896
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- WALL THICKNESS:
- 0,150'
- PISTON HEAD SHAPE:
- DISHED
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 105.50 MM
- DISPLACEMENT:
- 735 CC
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.150'
$329.99Qty in Cart: 0Quantity:Price:$329.99Subtotal: -
JE PISTONS Piston Kit 284685
JE PISTONS
$329.99When you're pushing your engine to the absolute limit in competition, your pistons need to handle extreme pressures without compromise. JE Pistons' 2618-T6 forged aluminum construction delivers the strength and reliability demanded by professional racers...09105895- SKU:
- 09105895
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- DISPLACEMENT:
- 449 CC
- WALL THICKNESS:
- 0,160'
- PISTON HEAD SHAPE:
- DISHED
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 95.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
$329.99Qty in Cart: 0Quantity:Price:$329.99Subtotal:
